A203 PAVING THE WAY TO THE DUODENUM: A CASE REPORT OF DUODENAL TUBERCULOSIS

Background Duodenal tuberculosis (DTB) is an uncommon manifestation of tuberculosis (TB), representing only 0.5% of all TB cases. The nonspecific features of its clinical presentation make diagnosis challenging, which can lead to delayed identification and even inappropriate treatments. Further, the location is also difficult to reach on conventional endoscopy and there are few studies on the use of balloon enteroscopy to diagnose DTB. Aims We report a case of DTB diagnosed using balloon enteroscopy that was successfully treated with symptom resolution. We also highlight uncommon features of DTB, including cobblestoning seen on endoscopy and villous blunting with duodenal lymphocytosis seen on histopathology. Methods Case report Results A 30-year-old previously healthy male returning from India 16 months prior presented to the emergency department with 1 month of abdominal distension, non-bloody diarrhea, and night-sweats. Examination was notable for fever and a distended abdomen. Computed-tomography showed thickening of the jejunum and ileum, with omental fat-stranding and intra-abdominal lymphadenopathy. As the lesion appeared out of reach for conventional endoscopy, balloon enteroscopy was performed, revealing an area of cobblestoning in the duodenum. Acid-fast bacilli (AFB) staining was negative. While TB culture was pending, a second balloon enteroscopy was performed, with AFB staining negative on repeat biopsy. Pathology showed villous blunting and increased intraepithelial lymphocytes but was negative for granulomas. As the diagnosis remained uncertain, endoscopic ultrasound-guided lymph node biopsy was performed and multiple lymph nodes were seen in the gastro-hepatic area. Lymph node biopsy AFB staining was also negative. 4 weeks later, pathology from the first balloon enteroscopy returned positive for TB. The remaining biopsy cultures were negative for TB. The patient was treated with standard of care treatment. At 2 and 4 months of follow-up, he reported complete resolution of symptoms. Conclusions The diagnosis of DTB is challenging due its non-specific presentation and rarity. Our case highlights the difficulty of diagnosis as endoscopic findings such as cobblestoning are highly uncommon. We provide support for the use of balloon enteroscopy as a novel method for diagnosis of DTB. With early identification, we were able to provide appropriate therapy and prevent propagation of the disease. Funding Agencies None

Primary duodenal tuberculosis - A rare case report

Gastroduodenal tuberculosis is uncommon even in parts of world where tuberculosis is endemic and accounts for 2.3 % of abdominal tuberculosis. We present here a case of duodenal tuberculosis who presented with vomiting, pain abdomen and weight loss. Duodenoscopy revealed mucosal ulceration and nodularity with marked enlarged and erythematous surrounding folds. Histopathology of duodenum showed features of tuberculosis.